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Ryzen 7 2700X vs Core i5-6400


Description
The 2700X is based on Zen+ architecture while the i5-6400 is based on Skylake.

Using the multithread performance as a reference, the 2700X gets a score of 433.2 k points while the i5-6400 gets 174.1 k points.

Summarizing, the 2700X is 2.5 times faster than the i5-6400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
800f82
506e3
Core
Pinnacle Ridge
Skylake-S
Architecture
Base frecuency
3.7 GHz
2.7 GHz
Boost frecuency
4.3 GHz
3.3 GHz
Socket
AM4
LGA 1151
Cores/Threads
8/16
4/4
TDP
105 W
65 W
Cache L1 (d+i)
8x64+8x32 kB
4x32+4x32 kB
Cache L2
8x512 kB
4x256 kB
Cache L3
16384 kB
6144 kB
Date
April 2018
September 2015
Mean monothread perf.
65.87k points
48.05k points
Mean multithread perf.
433.19k points
174.05k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
2700X
i5-6400
Test#1 (Integers)
4.25k
3.2k (x0.75)
Test#2 (FP)
19.72k
12.81k (x0.65)
Test#3 (Generic, ZIP)
5.84k
4.18k (x0.72)
Test#1 (Memory)
21.36k
4.3k (x0.2)
TOTAL
51.17k
24.49k (x0.48)

Multithread

2700X

i5-6400
Test#1 (Integers)
35.04k
11.45k (x0.33)
Test#2 (FP)
181.42k
46.67k (x0.26)
Test#3 (Generic, ZIP)
64.86k
14.69k (x0.23)
Test#1 (Memory)
8.21k
5.92k (x0.72)
TOTAL
289.54k
78.73k (x0.27)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
2700X
i5-6400
Test#1 (Integers)
15.22k
11.56k (x0.76)
Test#2 (FP)
24.12k
16.53k (x0.69)
Test#3 (Generic, ZIP)
5.87k
4.3k (x0.73)
Test#1 (Memory)
21k
3.97k (x0.19)
TOTAL
66.21k
36.36k (x0.55)

Multithread

2700X

i5-6400
Test#1 (Integers)
126.81k
43.01k (x0.34)
Test#2 (FP)
229.86k
64.46k (x0.28)
Test#3 (Generic, ZIP)
61.74k
16.14k (x0.26)
Test#1 (Memory)
9.77k
5.91k (x0.6)
TOTAL
428.19k
129.51k (x0.3)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
2700X
i5-6400
Test#1 (Integers)
14.44k
11.82k (x0.82)
Test#2 (FP)
24.92k
18.36k (x0.74)
Test#3 (Generic, ZIP)
5.8k
4.43k (x0.76)
Test#1 (Memory)
19.07k
4.95k (x0.26)
TOTAL
64.24k
39.56k (x0.62)

Multithread

2700X

i5-6400
Test#1 (Integers)
122.01k
46.04k (x0.38)
Test#2 (FP)
220.34k
69.47k (x0.32)
Test#3 (Generic, ZIP)
59.89k
16.33k (x0.27)
Test#1 (Memory)
9.9k
7.74k (x0.78)
TOTAL
412.13k
139.58k (x0.34)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
2700X
i5-6400
Test#1 (Integers)
15.61k
21.1k (x1.35)
Test#2 (FP)
26.08k
18.28k (x0.7)
Test#3 (Generic, ZIP)
5.84k
4.22k (x0.72)
Test#1 (Memory)
18.34k
4.45k (x0.24)
TOTAL
65.87k
48.05k (x0.73)

Multithread

2700X

i5-6400
Test#1 (Integers)
123.33k
80.03k (x0.65)
Test#2 (FP)
240.46k
71.1k (x0.3)
Test#3 (Generic, ZIP)
61.23k
16.19k (x0.26)
Test#1 (Memory)
8.17k
6.73k (x0.82)
TOTAL
433.19k
174.05k (x0.4)

Performance/W
2700X
i5-6400
Test#1 (Integers)
1175 points/W
1231 points/W
Test#2 (FP)
2290 points/W
1094 points/W
Test#3 (Generic, ZIP)
583 points/W
249 points/W
Test#1 (Memory)
78 points/W
104 points/W
TOTAL
4126 points/W
2678 points/W

Performance/GHz
2700X
i5-6400
Test#1 (Integers)
3631 points/GHz
6394 points/GHz
Test#2 (FP)
6065 points/GHz
5539 points/GHz
Test#3 (Generic, ZIP)
1357 points/GHz
1279 points/GHz
Test#1 (Memory)
4266 points/GHz
1348 points/GHz
TOTAL
15319 points/GHz
14560 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4